Pencil



Feb. 2, 1965 MASAKIYO NI1 'TA PENCIL Filed June 21, 1963 H53 H54 H55United States Patent Ofiice 3,158,072 Patented Feb. 2, 1955 3,168,072PENCIL Masakiyo Nitta, 2583 S-chome, Kamimeguro, Megnro-ku, Tokyo, JapanFiled June 21, 1963, Ser. No. 289,703 Claims priority, applicationJapan, June 10, 1963,

1 Claim. (Cl. 12083) The present invention relates to a lead pencil, andmore particularly, to a lead pencil of a very simple and inexpensivemanufacture which can be presented free of charge for advertising.

It is not infrequent that when a spectator enjoying baseball, footballor other sports game wants to keep score or a man going away from homewith no coat on desires to put down something on memo, he finds himselfwith no writing instrument whatever.

As is well known, the lead pencil in general is rather long and itssharpened point of lead tends to be broken even by a slight impact andis thus inconvenient to carry. Therefore, in order to prevent the leadpoint of pencil from breaking, there have been proposed various means,such as, a cap to cover it, a clip attached to the pencil to be put in apocket, and a pencil case to hold it. However, it is not alwaysconvenient for everyone to have a pencil or other writing instrument onhis person when he goes away from home. It will be, therefore, a greatconvenience if there is available a pencil which can be thrown away ordisposed at will after a temporary use on the way outdoors.

It is, therefore, a primary object of the invention to provide a leadpencil of an exceedingly simple and inexpensive construction in which ashort lead is provided and which can be thrown away or disposed at willafter a temporary use.

Numerous other objects and advantages of the invention will be apparentas it is better understood from the following description, which, takenin connection with the accompanying drawings, discloses preferredembodiments thereof.

in the drawings:

FIG. 1 shows a perspective view of a lead pencil in accordance with apreferred embodiment of the invention.

FIG. 2 is a plan view of FIG. 1.

FIG. 3 is a sectional view of FIG. 2 taken along the line TL-III.

FIG. 4 is a plan view of a pencil holder of the lead pencil as shown inFIG. 2.

FIG. 5 is a sectional view of FIG. 4 taken along the line VV.

FIG. 6 is a plan view of a label printed with a design or a legendthereon to be pasted on both sides of the lead holder.

FIG. 7 is a side view of FIG. 6.

FIG. 8 is a perspective view of a lead pencil in accordance with anotherpreferred embodiment of the invention.

FIG. 9 is a plan view of FIG. 8.

FIG. 10 is a side view of FIG. 8.

FIG. ll is a sectional view of FIG. 9 taken along the line XIXI.

FIG. 12 is an end sectional view of FIG. 9.

FIG. 13 is a plan view of a cardboard blank for making a plurality oflead holders in accordance with the preferred embodiment as shown inFIG. 8, in which the cutting of the blank and the press molding of thegroove for lead are illustrated.

Referring to FIGS. 1-7, inclusive, which illustrate a preferredembodiment of the invention, a pencil lead holder 1 is made of cardboardor pasteboard cut in the form of an ellipse. It will be noted that anyform other than ellipse is preferred as desired, and any suitablematerial other than cardboard may be chosen. This form may be as a longrectangular one with its four corners cut 01f. As shown in FIG. 4, alongitudinally extended narrow slot opening 2 substantially equal to orslightly larger than the diameter of lead 5 is cut off at the lower endof the lead holder.

It will be understood that if the cardboard used is less than thediameter of lead in thickness, two plies of cardboard bonded together byan adhesive may be used.

Then, a short piece of lead 5 is inserted into the slot opening 2 withits lead point protruded. In order to prevent the lead 5 from leavingthe slot opening 2, both sides of the lead holder 1 are pasted with alabel 3 as large as the holder, respectively, this label preferablyprinted with a design or a legend for advertising.

The lead pencil thus produced with the above Simple construction can beused as a pencil by having it between ones fingers. The function of thelead pencil can be fully achieved by this simple pencil of theinvention.

The lead pencil of the invention can be manufactured at a relatively lowcost by mass production on a commercial scale so that it will be ofgreat benefit as a mass media for advertising.

Another preferred embodiment of the invention in connection with FIGS.8l3, inclusive, a lead holder 6 is made of cardboard or other suitablematerial, a synthetic plastics may be used. In the longitudinal centerof the cardboard is molded by e.g. press molding process a semicirculargroove sutliciently large to receive the lead 5 therein. This leadholder can be cut off from a large blank of cardboard, as illustrated inFIG. 13. A complete pencil, as shown in FIGURE 9, is generallyrectangular in form with corners '7 and 8 cut off. In addition, eithersingle or double score lines (continuous small slot line) 9 parallelwith the corner lines 8 are preliminarily provided, the reason of whichwill be de scribed hereinbelow.

Manufacture of the above lead holder 6 is accomplished as shown in FIG.13 by the steps of cutting off a plurality of triangular notches 8 andrhombic notches 7 from a large blank of cardboard 12, providing singleor double score lines at predetermined positions, press molding aplurality of semicircular groove 11 sutficiently large to receive apiece of lead 5, respectively, and finally cutting off each holder 6along the lines 13, respectively, to obtain a piece of holder 6.

A piece of lead 5 is placed in the groove 11 with a point thereofprotrdued at the end of the holder 6. Then the blank is folded inwardlyalong the line 14 and the respective halves thereof bonded together by asuitable adhesive 10 to produce a lead holder.

It is preferred that the outside surface of the holder 6 be printed witha design or a legend for adverti'sing.

With the consumption of the lead point by use, the end of the holder 6is removed froin the score line 9 to expose a fresh point of lead forre-use.

As fully described in the foregoing, the lead pencil of a very simpleand low-cost construction of the invention will be manufactured at acheap cost by means of mass production, so it will be distributed freeof charge among spectators and customers as advertising, thus it willgive them a temporary benefiit for putting down score or memo.

It is though that the invention and many of its at tendant advantageswill be understood from the foregoing description and it will beapparent that various charges may be made in the form, and constructionwithout departing from the spirit and scope of the invention, the formshereinbefore described being some preferred embodiments thereof.

I claim:

A lead pencil which comprises: a lead holder, said holder being formedfrom a generally rectangular blank of sheet material selected from thegroup of cardboard and synthetic plastics, said blank having alongitudinally extending semi-circular groove provided in one surfacethereof, said holder being made by folding said blank along a linenormal to said grooves so as to bring portions of said surface asdefined by said line into superposed position whereby portions of saidgroove in each of said surface portions co-act to'define an elongatedcavity having one end open; and a pencil lead, said lead being adaptedto be partially received within said cavity and protrude outwardly fromsaid holder in the plane of said superposed surfaces, said surfacesbeing bonded together to hold said lead within said cavity, the cornersof one end of said holder disposed adjacent to said protruding leadbeing cut off along a pair of diverging lines extending from pointsimmediately adjacent to said open end of said cavity, said holder beingprovided with a least one pair of score lines disposed parallel to saiddivergent lines and at least one score line disposed parallel to saidend of said holder and connecting said pair of score lines, wherebyportions of said holder as defined by said score lines may be removed tosuccessivelytexpose portions of said'lead disposed within said cavity.

References Cited by the Examiner UNITED STATES PATENTS 865,764 9/07Creahan 120-40 1,367,872 2/21 Glaesser 120-l03 1,373,062 3/21 Faber12013 X 1,377,182 5/21 Biondo l20-13 2,296,455 9/42 Schroeder 12083JEROME SCHNALL, Primary Examiner. LAWRENCE CHARLES, Examiner.

